Chinese-made American standard steel plate grades ASTM SA543 Type B Class 3 Chemical composition of pressure vessel plates&Mechanical properties
ASTM SA543 Type B Class 3 Similar Grade Lookup Table

SA543 Type B Class3  Chemical composition

Grade Chemical composition Remark
C Mn Si S P Cr Mo Ni V B Ti Cu Nb Ca Zr …
SA543
Type B Class 3		 ≤0.20 ≤0.40 Smelting
Analysis		 Finished Product Analysis ≤0.020 ≤0.020 Smelting
Analysis		 Finished Product Analysis Smelting
Analysis		 Finished Product Analysis Smelting
Analysis		 Finished Product Analysis ≤0.03 Smelting
Analysis		 Finished Product Analysis Smelting
Analysis		 Finished Product Analysis Smelting
Analysis		 Finished Product Analysis Smelting
Analysis		 Finished Product Analysis Smelting
Analysis		 Finished Product Analysis Smelting
Analysis		 Finished Product Analysis
0.15-0.40 0.13-0.45 1.00-1.90 0.94-1.96 0.20-0.65 0.16-0.69 2.25-4.00 2.18-4.07

SA543 Type B Class3  Mechanical properties

Grade Mechanical properties Remark
ReH Rm KV₂ Elongation%
SA543
Type B Class 3		 485 620-795 2-inch (50 mm) gauge length elongation
≥16